True Name: Okita Souji. She usually refers to herself as "Watashi," but uses "Okita-san" when relaxed. She typically speaks in a light, polite tone, behaving as a well-mannered yet cheerful and soft-spoken person. However, in battle, she reveals a cold-blooded outlook on life and death and a chillingly sharp instinct for victory, showing no mercy to anyone regardless of age or gender. She possesses an extremely dry personality, willing to cut down even close friends without blinking if ordered to do so, and has no interest in personal ideologies or organizational causes. According to Yamanami, only Kondo or Hijikata could truly control her, and she was somewhat alienated even among her comrades. When told to strike down Serizawa, with whom she was close, she agreed without hesitation, a fact that reportedly froze even the blood of the feared "Demon" Hijikata. Stats: Strength C, Endurance E, Agility A+, Mana E, Luck D, Noble Phantasm C. Her Noble Phantasm is the Mumyo Sandan-zuki (Avici Three-Stage Thrust). Her Master is Kanata Akagi.

True Name: Oda Nobunaga. She refers to herself as "Washi" and ends sentences with "ja," speaking in an arrogant, seasoned tone that belies her youthful appearance—looking no more than a teenager. As one who claims the title of "Demon King," she is by no means a soft individual. Her philosophy is: "I allow playfulness, but I do not tolerate contempt." Essentially, she understands the need for a sense of fun even in war, but will instantly kill anyone who underestimates her. She is incredibly fond of those she likes but biting towards those she doesn't. Stats: Strength B, Endurance B, Agility B, Mana A, Luck A-, Noble Phantasm EX. Her Noble Phantasm is Sandan Uch (Three Thousand Worlds). It is strong against Heroic Spirits with Divinity or Riding skills but is less effective against others. Her Master is Kaname Asama.

True Name: Sakamoto Ryoma. He usually refers to himself as "Boku," but switches to "Washi" when in Tosa dialect mode. Though a master of the Hokushin Itto-ryu style, he is a naturally good-natured person who dislikes conflict. To hide his identity during the Holy Grail War, he wears a locally acquired military uniform and intentionally suppresses his Tosa dialect. He has a slightly aloof atmosphere but is gentle, friendly, and easy to talk to. He often has to manage the whims of "Oryou-san," who travels with him and is far too free-spirited. While he usually acts like a non-committal, soft-spoken man, he behaves gallantly when it counts and is a skilled negotiator. He prioritizes the big picture over personal gain. He may use expedients, but he never tells lies. Stats: Strength C, Endurance C, Agility B, Mana C, Luck A-, Noble Phantasm EX. His Noble Phantasm is "Like a Soaring Dragon," where Oryou-san transforms into a massive dragon and attacks the enemy. He has no Master.

True Name: Okada Izo. He claims to be Sakamoto Ryoma. He refers to himself as "Washi." While demonstrating exceptional swordsmanship, he also possesses a ruthless side, willing to take the family of an enemy Master hostage to force an enemy Servant to commit suicide, choosing any means necessary to ensure victory. He is fundamentally short-tempered and puts on a front of strength. Calling himself a genius, he possesses a wild, reckless ferocity like a mad dog, ready to cut down anyone who mocks him instantly. Though he often looks down on others, his words surprisingly hit the essence of matters and are often logically sound. Having lived a desolate life as an assassin, his personality is twisted, crude, and violent. Stats: Strength C, Endurance D, Agility B, Mana E, Luck E, Noble Phantasm C. His Noble Phantasm is Shimatsu-ken (Execution Blade), which allows him to replicate any sword technique he has seen once. His Master is Major Reida.

True Name: Mori Nagayoshi. He refers to himself as "Ore." Even considering his class and his origin in the Sengoku period—an era rife with treachery and betrayal—he is a villain of unparalleled ferocity. Unlike most Berserkers of that era, he retains his language skills and is capable of basic communication, but his eyes and speech are clearly dangerous, making him the type of person one wants to avoid eye contact with. His psyche is beyond "villainous" and enters the realm of "abnormal"; he might cheerfully strike up a conversation after hacking off his Master's arm along with the Command Spells, or actively seek to slaughter unrelated women and children who aren't even witnesses, as if it were a game. Stats: Strength B, Endurance C, Agility D, Mana E, Luck D, Noble Phantasm C. His Noble Phantasm is Ningen Mukotsu, which delivers a blow that ignores defense. His Master is Magatsu.

A descendant of a declining family of magi. Since the practice ended with his father's generation, his knowledge of magecraft is that of a complete amateur, and he has almost no attachment to it. While sorting through the belongings of his late grandmother, who was a magus, he accidentally time-travels from the modern era to the Imperial Capital and becomes Saber's Master. For better or worse, he has the personality of a typical modern person; consequently, he suffers from the gap between the modern world he lived in and an era with a different view of life and death. He strongly loathes becoming accustomed to the values of the late-war period where lives are frequently lost. Tsukumo Fujimiya is his future grandmother, a fact he keeps hidden.

He holds Heroic Spirits in contempt and treats anyone in his way as a "traitor to the nation." He is extremely arrogant, not considering anyone but magi to be human. He is willing to use and discard those around him to achieve his goals. He is planning a coup d'état with the goal of creating a world managed and ruled by magi. He has no intention of respecting the concealment of mystery, which is the fundamental pride of a magus. In short, he is like a version of Shinji Matou who succeeded and grew up.

A young magus girl who was supposed to participate in the Holy Grail War in the Imperial Capital. She wears a school uniform. She is high-spirited and somewhat short-tempered. She is the 17-year-old fifth-generation head of the Fujimiya family, a lineage that has somewhat fallen into decline. For the Holy Grail War, she had the Holy Church arrange for the "Scabbard of the Holy Sword" as a catalyst, intending to summon King Arthur as Saber. However, she was attacked by an enemy before she could do so, and Kanata Akagi, who had time-traveled there, accidentally summoned Okita Souji instead, preventing her from participating. Left with no choice, she tries to make Kanata fight as her proxy. She is actually the younger version of Kanata's paternal grandmother... though she doesn't know it. The Scabbard of the Holy Sword was a fake; the Holy Church deceived her just to make up the numbers.